diff --git a/index.html b/index.html
index e5d9213e1..005d3d2a8 100644
--- a/index.html
+++ b/index.html
@@ -1,4 +1,4 @@
-<!doctype html>
+<!DOCTYPE html>
 <html>
   <head>
     <title>Socket.IO chat</title>
@@ -24,12 +24,12 @@
     <script>
       $(function () {
         var socket = io();
-        $('form').submit(function(){
+        $('form').submit(function() {
           socket.emit('chat message', $('#m').val());
           $('#m').val('');
           return false;
         });
-        socket.on('chat message', function(msg){
+        socket.on('chat message', function(msg) {
           $('#messages').append($('<li>').text(msg));
           window.scrollTo(0, document.body.scrollHeight);
         });
